﻿/*
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at 
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *  
 */
using System;
using java = biz.ritter.javapi;

namespace biz.ritter.javapi.util
{


    /**
     * {@code Observer} is the interface to be implemented by objects that 
     * receive notification of updates on an {@code Observable} object.
     * 
     * @see Observable 
     */
    public interface Observer {

        /**
         * This method is called if the specified {@code Observable} object's
         * {@code notifyObservers} method is called (because the {@code Observable} 
         * object has been updated.
         * 
         * @param observable
         *            the {@link Observable} object.
         * @param data
         *            the data passed to {@link Observable#notifyObservers(Object)}.
         */
        void update(Observable observable, Object data);
    }
}
